/*
Kakine
ActionScript Framework
Copyright © 2011, PUNY, LLC.

This file is part of KAKINE.

KAKINE is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

KAKINE is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with KAKINE.  If not, see <http://www.gnu.org/licenses/>.
*/ 
package com.puny.utils.easing
{
	public class OneEndsTrigonometricEasing extends TrigonometricEasingImpl
	{
		/**
		 * Starts or stops slowly
		 * @param start start position
		 * @param end end position
		 * @param frame ends after <code>frame</code>
		 * @param easing should be between -1 (maximum for start side) and 1 (maximum for end side). 0 means no easing effect. 
		 * 
		 */
		public function OneEndsTrigonometricEasing(start:Number, end:Number, frame:int, easing:Number) {
			super(start, end, frame);
			var e:Number = easing < -1? -1 : ((easing > 1) ? 1 : easing);
			var w:Number = Math.PI / (frame);
			var a:Number = -e * _vx / Math.sin(w);
			for(var i:int = 0;i < frame;i++) {
				_Asin.push(a * Math.sin(w * i));
			}
		}
		
	}
}